Boyfriend likes wearing girl clothes- how do I learn to accept this?
A little back story. Shortly after starting our relationship he wanted me to finger his butt; it was off-putting but I try to be open with sexual things. He liked it... a lot. But I know that it's pretty normal in men to enjoy this so I've worked with him and do it when he asks even though it's a turn-off for me. Not too long after he first asked that we were drunk one night and he asked to wear one of my bras and a skirt while we were "getting busy". I went with it; doesn't hurt to try. I'm really not into it but I can see that he is. I know he's embarrassed though, cause the next day he acted completely different than normal. The dressing up stopped for a long time, but the butt-play continued. Fast forward almost 7 months; surprise pregnancy has happened and we've moved in together. He hasn't drank in a long time because he didn't want to do it around me when I can't. 2 nights ago he came into our room where I was laying down trying to get some sleep( I work mornings and he works nights) I could smell the vodka in his breath. He just lays down and tells me; "I like to wear... "other" clothes" I just responded with an "okay". He left the room and came back about 10 minutes later and started feeling up on me and obviously wanting to get some. I went with it, feeling kind of bad cause our sex life had been lacking lately due to pregnancy side effects and all that. During the "do" he grabs my hand and puts it up his shirt and he's wearing a bra(he went out and bought his own bra this time). I go with it, trying to be supportive. But it starts ruining it for me, just a total turn-off. I tell him I'm feeling sore and to stop, so he gets up and finishes himself next to me. I went to bed with tears in my eyes cause I just don't know what to do. Next night he gets off work kind of late and tells me he's going to stay up; maybe drink a little. I'm a little upset but let him do his thing and I lay down for bed. Awhile later he comes into our room(its dark and he doesn't realize I'm still awake) He's wearing his bra and grabs his lotion and leaves. I can hear him in the other room masturbating. I got up and shut our bedroom door and just tried to sleep; with no luck. Later he comes and lays in bed next to me, he lightly picks up my hand and places it on his right breast and he's still wearing his bra. I just lay still, pretending to be asleep to see what he's planning to do. A moment passes and he moves my hand to his butt cheek and leaves it there. I move my hand to his arm and kind of lightly pat it and then place my arm back to my side. I fall asleep once again with tears in my eyes.
He's told me some things about his childhood that he has done and such, and honestly this isn't that much of a surprise. I really want to be supportive. As of right now it's just kind of a sex/kink thing and I want to be able to let him be him but it's just such a turn-off for me. I just don't see any good way this can turn out. Because I'm not interested in sex with him while he's wearing bras and such, and he's obviously very into it. Either this is going to end with us resenting each other over lack of a sex life, or I feel he could figure out his sexuality is something other than straight. With a child on the way and just recently signing a year lease with him I am feeling terrified.
Should I just suck it up and give in to his fantasies even when they are a turn-off? I'm hopelessly lost.